An author and blogger disinvited by the Roman Catholic Diocese of Worcester to a Catholic men’s conference in March says he will still come to the city and try to talk to attendees.

Robert Spencer, who said he was invited last June by the planning committee of the Catholic Men’s Conference, urged readers of his blog Thursday to contact church officials and express their disapproval with Wednesday’s decision by the Diocese of Worcester to cancel his presentation.

Mr. Spencer blogs and has written books that some consider anti-Muslim.

He said in an email Thursday afternoon that he intends to be at the March 16 conference at the DCU Center.

“I have inquired about buying an exhibitor table but have not received a response. If this is denied, I will set up outside and give the talk the Diocese of Worcester feared attendees would hear,” he said in an email.

Mr. Spencer, a Catholic and director of the blog Jihad Watch, posted Thursday that people should contact the Diocese of Worcester “and let them know, politely and courteously, that you disapprove of their capitulation to Islamic supremacists and refusal to give me an opportunity to answer their charges or get a fair hearing.”

Monsignor Thomas Sullivan, the organizer of the conference, said he did not believe Mr. Spencer is against the Muslim religion, but said Bishop Robert J. McManus pulled the invitation to avoid a controversy.

Msgr. Sullivan, the diocesan chancellor, said he has never spoken to Mr. Spencer and that another committee member asked him to be a conference presenter.

“This particular speaker was perceived by some Islamic groups as being anti-Islamic which was not our perception,” Msgr. Sullivan said. “Someone contacted the Archdiocese of Boston and expressed their concern,” he said. “I think he’s a good Catholic.”

The concern was relayed to local Roman Catholic leaders, Msgr. Sullivan said. He said Bishop McManus opted to withdraw the invitation “rather than undergo a media outcry.”

“The bishop is the bishop and he made the decision,” Msgr. Sullivan said.

“I was not looking for a problem,” he said. “The bishop felt that by disinviting him we would be avoiding a problem in casting a bad light on Christian-Islamic relations,” Msgr. Sullivan said. “Why risk that?”

Dr. Amjad Bahnassi, a member of and spokesman for the Islamic Society of Greater Worcester, said Mr. Spencer’s views are “well-known” and “hateful and offensive.”

“He has made it very clear he hates Islam,” Dr. Bahnassi said. “This is a person who is biased in his views.”

Mr. Spencer said the criticism of his remarks “is a common, frequently used tactic to divert attention from the grim reality of how jihadists use the texts and teachings of Islam to justify violence and supremacism.”

“There is no hate in my work except what I report from those jihadists,” he said in an email. “My work is in defense of the freedom of speech, the freedom of conscience, and the equality of rights of all people before the law.”

A spokesman for the Diocese of Worcester said organizers had intended Mr. Spencer to offer attendees a presentation on Islam.

“Although the intention of the conference organizers was to have a presenter on Islam from a Catholic’s perspective, we are asking Robert Spencer to not come to the Worcester Catholic Men’s Conference given that his presence is being seen as harmful to Catholic–Islamic relations both locally and nationally,” Diocesan spokesman Raymond Delisle said in a statement.

Mr. Spencer said no one at the diocese has contacted him about his request for a meeting.

Dr. Bahnassi said there are no hard feelings over the incident.

“I doubt there was any foul play or bad intentions by the Diocese,” he said. “We have great relations between the two faiths.”